#include <stdio.h>
#include <stdlib.h>

int main()
{
    int year = 2021,month = 10,day = 16;
    // printf("%d-%d-%d",year,month,day);
    // char str[] = "12345";
    // printf("%d\n",atoi(str));
    char buf[1024];
    sprintf(buf,"%d-%d-%d",year,month,day);
    puts(buf);
    exit(0);
}